Huge PET related fixes:
- Activating a buff socket will not cause the kit socket to activate as well and vice-versa
- PETs will not try to heal or skill you anymore while you're dead
- Disabled PET sockets in the skill bar when they are unusable
- Added detailed error messages for PET related errors
- Reworked the automated usage of PET socket content (skills and kits)
- Reworked the detection of activated PET sockets
- Fixed an exploit where sockets could get activated on the client despite having failed on the server
- Fixed bugs where PET sockets could stay active despite being disabled